公开(公告)号：US07940606B2

公开(公告)日：2011-05-10

申请号：US12481061

申请日：2009-06-09

申请人： Ariyoshi Nakaoki ,  Naoto Kojima ,  Koji Sekiguchi ,  Osamu Kawakubo ,  Kazuhiko Fujiie

发明人： Ariyoshi Nakaoki ,  Naoto Kojima ,  Koji Sekiguchi ,  Osamu Kawakubo ,  Kazuhiko Fujiie

IPC分类号： G11B11/00

CPC分类号： B82Y10/00 ,  G11B7/00454 ,  G11B7/005 ,  G11B7/007 ,  G11B7/1387 ,  G11B7/24035 ,  G11B7/24047 ,  G11B7/243 ,  G11B7/266 ,  G11B2007/24304 ,  G11B2007/24306 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/2432 ,  G11B2007/24322 ,  G11B2007/24324 ,  G11B2007/24328

摘要： A signal detecting device includes: a semiconductor substrate; a near-field light generating section that is provided on the semiconductor substrate and generates near-field light near an interface with the semiconductor substrate; a light source that outputs light having wavelength corresponding to photon energy about a half as large as band-gap energy of a material of the semiconductor substrate; and a current detecting unit that detects a photocurrent generated in the semiconductor substrate when the near-field light is generated.

摘要翻译： 信号检测装置包括：半导体基板; 近场光产生部，设置在所述半导体基板上，并在与所述半导体基板的界面附近产生近场光; 输出具有与半导体衬底的材料的带隙能量的一半一半的光子能量对应的光的光源; 以及电流检测单元，其检测当产生近场光时在半导体衬底中产生的光电流。

公开(公告)号：US20080199602A1

公开(公告)日：2008-08-21

申请号：US12148636

申请日：2008-04-21

申请人： Takeshi Miki ,  Kazuhiko Fujiie ,  Yasuhito Tanaka ,  Goro Fujita ,  Tetsuhiro Sakamoto

发明人： Takeshi Miki ,  Kazuhiko Fujiie ,  Yasuhito Tanaka ,  Goro Fujita ,  Tetsuhiro Sakamoto

IPC分类号： B05D5/00 ,  B05D3/06

CPC分类号： G11B11/10582 ,  G11B11/10517 ,  G11B11/10584

摘要： A method for manufacturing a magneto-optical recording medium in which reading of recorded information is performed through domain wall displacement in a reproduction layer is provided, in which magnetic separation of groove side-wall portions is performed more reliably; as a result a magneto-optical recording medium with satisfactory recording and reproduction characteristics can be provided. The method is to manufacture a magneto-optical recording medium in which on a substrate 1 having grooves 12 at least a reproduction layer and a recording layer, each of which is formed of magnetic layers, are deposited and recorded information is reproduced through domain wall displacement in the reproduction layer; and the method includes a first annealing process in which, after depositing at least the reproduction layer and recording layer on the substrate 1 on which are formed lands 11 and grooves 12, only side-wall portions 13 between adjacent lands 11 and grooves 12 are irradiated with laser light L1, and a second magnetization annealing process in which regions including adjacent side-wall portions 13 and lands between side-wall portions 13 are irradiated with laser light L2 having a spot diameter greater than the spot diameter of the laser light in the first annealing process, while applying an external magnetic field Hex.

摘要翻译： 提供了一种制造磁光记录介质的方法，其中通过再现层中的畴壁位移进行记录信息的读取，其中槽侧壁部分的磁分离更可靠地进行; 结果，可以提供具有令人满意的记录和再现特性的磁光记录介质。 该方法是制造磁光记录介质，其中在至少具有由磁层形成的再生层和记录层的凹槽12的基板1上沉积，并通过畴壁位移再现记录信息 在复制层; 并且该方法包括第一退火处理，其中在至少将再生层和记录层沉积在其上形成有焊盘11和凹槽12的基板1上之后，仅在相邻焊盘11和槽12之间照射侧壁部分13 激光L 1和第二磁化退火处理，其中包括相邻的侧壁部分13和侧壁部分13之间的区域的区域被照射具有大于激光的光斑直径的光点直径的激光L 2 在第一退火过程中，同时施加外部磁场Hex。

公开(公告)号：US07305689B2

公开(公告)日：2007-12-04

申请号：US10833540

申请日：2004-07-15

申请人： Naohiro Netsu ,  Yoshitaka Aoki ,  Tetsu Watanabe ,  Kazuhiko Fujiie ,  Yasuaki Maeda ,  Takuya Kaeriyama

发明人： Naohiro Netsu ,  Yoshitaka Aoki ,  Tetsu Watanabe ,  Kazuhiko Fujiie ,  Yasuaki Maeda ,  Takuya Kaeriyama

IPC分类号： G11B7/24

CPC分类号： B29C69/001 ,  B29C2793/0009 ,  B29L2017/005 ,  G11B7/007 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/24085 ,  G11B11/10508 ,  G11B11/10582 ,  G11B17/03 ,  G11B23/0035 ,  G11B23/0307 ,  G11B23/0308 ,  G11B23/0317

摘要： An optical recording medium is provided which has a substrate and a signal recording layer provided on the substrate and in which an information signal is recorded in the form of microscopic pits. A light beam is focused on the signal recording layer and some change of the light beam carried by a return light from the signal recording layer is detected to read the information signal recorded on the signal recording layer. The optical recording medium has a diameter of 65 mm or less and a thickness of 0.4 to 0.7 mm. An information signal recording area extends outwardly from a radial position of 12.5 mm or less from the center of the medium. The ratio in area between the information signal recording area and non-signal recording area is 3.4 or more. The storage capacity of this medium is 2 gigabytes or more. The optical recording medium has formed at the center thereof a center hole around which an annular table-abutment convexing to one side of the medium is formed. A magnetic-clamping hub is installed in the center hole and thus the medium is magnetically clamped to a rotation driving mechanism of an optical recording and/or reproducing apparatus. The compactness and high density of recording of the optical recording medium will contribute greatly to a further compact structure of a recording and/or reproducing apparatus in which the medium is to be used.

摘要翻译： 提供了一种光记录介质，其具有基板和设置在基板上的信号记录层，其中以微观凹坑的形式记录信息信号。 光束聚焦在信号记录层上，并且检测由来自信号记录层的返回光所携带的光束的一些变化，以读取记录在信号记录层上的信息信号。 光记录介质的直径为65mm以下，厚度为0.4〜0.7mm。 信息信号记录区域从介质中心的12.5mm或更小的径向位置向外延伸。 信息信号记录区域与非信号记录区域之间的面积比为3.4以上。 该介质的存储容量为2 GB或更多。 光记录介质在其中心处形成有中心孔，在该中心孔处形成有凸起到介质一侧的环形台面邻接。 磁性夹紧轮毂安装在中心孔中，因此介质被磁力夹紧到光学记录和/或再现装置的旋转驱动机构。 光记录介质的紧凑性和高密度记录对于使用介质的记录和/或再现装置的进一步紧凑结构将有很大的贡献。

公开(公告)号：US20070008832A1

公开(公告)日：2007-01-11

申请号：US10569749

申请日：2004-08-19

申请人： Yasuhito Tanaka ,  Takeshi Miki ,  Tetsuhiro Sakamoto ,  Goro Fujita ,  Kazuhiko Fujiie

发明人： Yasuhito Tanaka ,  Takeshi Miki ,  Tetsuhiro Sakamoto ,  Goro Fujita ,  Kazuhiko Fujiie

IPC分类号： G11B11/00

CPC分类号： G11B11/10582

摘要： A laser beam from an LD 11 is irradiated onto a magnetooptic disk 33 by a predetermined power for a heat treatment. After the heat treatment, the laser beam of a power smaller than the power upon heat treatment is irradiated to the heat-treated area. Reflection light of the laser beam of the small power enters photodetectors 24 and 26 and reflection light amounts of a P wave and an S wave are detected, respectively. A differential detecting circuit 27 detects a level of a magnetooptic signal corresponding to the heat-treated area on the basis of the reflection light amounts of the P wave and the S wave. A controller 28 determines whether or not the magnetooptic signal level detected by the differential detecting circuit 28 lies within a permissible range. If it is out of the range, the power of the laser beam to execute the heat treatment is adjusted and the process of a magnetooptic disk is stopped or a message showing such a fact is displayed, or the like.

摘要翻译： 来自LD11的激光束以预定的功率照射在磁光盘33上用于热处理。 在热处理之后，将热处理后的功率小于的功率的激光束照射到热处理区域。 小功率激光束的反射光分别进入光电探测器24和26，分别检测P波和S波的反射光量。 差分检测电路27基于P波和S波的反射光量来检测与热处理区域对应的磁光信号的电平。 控制器28确定由差分检测电路28检测的磁光信号电平是否处于容许范围内。 如果超出该范围，则调整执行热处理的激光束的功率，并且停止磁光盘的处理或者显示表示这种事实的消息等。

公开(公告)号：US5650991A

公开(公告)日：1997-07-22

申请号：US869366

申请日：1992-04-14

申请人： Kazuhiko Fujiie

发明人： Kazuhiko Fujiie

IPC分类号： G11B20/12 ,  G11B7/0037 ,  G11B7/007 ,  G11B11/105 ,  G11B27/00 ,  G11B27/034 ,  G11B27/19 ,  G11B27/24 ,  G11B27/32 ,  G11B27/34 ,  G11B27/36 ,  G11B7/24 ,  G11B15/04

CPC分类号： G11B7/00736 ,  G11B11/10582 ,  G11B11/10595 ,  G11B20/00086 ,  G11B20/00724 ,  G11B27/034 ,  G11B27/19 ,  G11B27/24 ,  G11B27/329 ,  G11B27/34 ,  G11B7/0037 ,  G11B2220/2525 ,  G11B2220/2529 ,  G11B2220/2545 ,  G11B27/36

摘要： A magneto-optical disc 1 has a TOC area in which the cumulative recordable data volume or the cumulative recordable time is preformatted, and a user TOC area in which the cumulative recorded data volume or the cumulative recorded time is preformatted. When recording audio data, a system controller 17 restricts the volume of recording data or the recording time based on the cumulative recordable data volume, the cumulative recordable time, cumulative recorded data volume, the cumulative recorded time or the data compression factor, while causing an updated cumulative recorded data or an updated cumulative recorded time to be recorded. Restrictions of the recording may be performed based on the cumulative recorded data volume or the cumulative recorded time. A prepaid system may be realized by charging the fee conforming to the cumulative recordable data volume or the cumulative recordable time at the time of sale of the disc.

摘要翻译： 磁光盘1具有其中累积可记录数据量或累积可记录时间被预格式化的TOC区域，并且其中累积记录数据量或累积记录时间被预格式化的用户TOC区域。 当记录音频数据时，系统控制器17基于累积可记录数据量，累积可记录时间，累积记录数据量，累积记录时间或数据压缩因子来限制记录数据的量或记录时间，同时引起 更新的累积记录数据或记录的更新的累积记录时间。 记录的限制可以基于累积记录数据量或累积记录时间来执行。 预付费系统可以通过对符合该可累积记录数据量的费用或盘销售时的累积可记录时间进行计费来实现。

公开(公告)号：US5467336A

公开(公告)日：1995-11-14

申请号：US163927

申请日：1993-12-08

申请人： Nobuhiko Ando ,  Kazuhiko Fujiie

发明人： Nobuhiko Ando ,  Kazuhiko Fujiie

IPC分类号： G02B5/30 ,  G11B7/135 ,  G11B11/10 ,  G11B11/105 ,  G11B7/00

CPC分类号： G11B11/10545 ,  G11B11/10595

摘要： An optical pickup device for an information recording and/or reproducing apparatus in which fluctuations in polarization film characteristics due to the variable incident angles of the light beam to the beam splitter may be reduced to prevent C/N characteristics from being lowered. The optical pickup device includes an objective lens 3 for converging a light beam L from a laser light source 1 to a magneto-optical disc 2, a beam splitter 8 arranged on a light path between the laser light source 1 and the objective lens 3 for guiding a return laser light beam Lr from the disc to outside of the light path, and a photodetector 4 for detecting the return light beam Lr guided by the beam splitter 8 to outside of the light path. The beam splitter 8 is arranged at a portion in the light path between the laser light source 1 and the objective lens 3 in which the light beam L from the laser light source 1 is a divergent light beam. The multi-layered dielectric film 12 of the beam splitter 8 has polarization film characteristics of reflecting 65% of S-polarized light components and 35% of the P-polarized light components of the light beam L and the return light beam Lr incident on the multi-layered dielectric film 12.

摘要翻译： 一种用于信息记录和/或再现装置的光学拾取装置，其中可以减小由于光束到分束器的可变入射角引起的偏振膜特性的波动，以防止C / N特性降低。 光拾取装置包括用于将来自激光光源1的光束L会聚到磁光盘2的物镜3，布置在激光光源1和物镜3之间的光路上的分束器8，用于 将返回激光束Lr从光盘引导到光路外部;以及光电检测器4，用于检测由分束器8引导到光路外部的返回光束Lr。 分束器8布置在激光光源1和物镜3之间的光路中的来自激光光源1的光束L是发散光束的部分。 分束器8的多层电介质膜12具有反射S偏振光成分的65％的偏振膜特性和入射到光束L上的光束L和返回光束Lr的P偏振光分量的35％ 多层电介质膜12。

公开(公告)号：US5402397A

公开(公告)日：1995-03-28

申请号：US136952

申请日：1993-10-13

申请人： Takashi Ohmori ,  Hajime Yano ,  Kazuhiko Fujiie

发明人： Takashi Ohmori ,  Hajime Yano ,  Kazuhiko Fujiie

IPC分类号： G11B5/02 ,  G11B11/10 ,  G11B11/105 ,  G11B13/04

CPC分类号： G11B11/10534 ,  G11B11/10552

摘要： An optical head applies a laser beam to a region of the magnetooptical disc, and a magnetic head applies a magnetic field to the region of the magnetooptical disc while the laser beam is being applied thereto, thereby to record information in the region. The optical and magnetic heads are interconnected by a link mechanism so that they are movable in unison with each other radially with respect to the magnetooptical disc. An electromagnetic shield is disposed around the magnetic head for blocking magnetic and electric fields parallel to the magnetooptical disc.

摘要翻译： 光学头将激光束施加到磁光盘的区域，并且磁头将磁场施加到磁光盘的区域，同时将激光束施加到其上，从而在该区域中记录信息。 光学磁头和磁头通过连杆机构相互连接，使得它们可相对于磁光盘径向移动。 电磁屏蔽设置在磁头周围，用于阻挡平行于磁光盘的磁场和电场。

公开(公告)号：US5363362A

公开(公告)日：1994-11-08

申请号：US48359

申请日：1993-04-15

申请人： Yasuaki Maeda ,  Ryo Ando ,  Hideo Obata ,  Hideki Nagashima ,  Tadao Yoshida ,  Kazuhiko Fujiie ,  Hirotoshi Fujisawa ,  Hiroshi Mukawa

发明人： Yasuaki Maeda ,  Ryo Ando ,  Hideo Obata ,  Hideki Nagashima ,  Tadao Yoshida ,  Kazuhiko Fujiie ,  Hirotoshi Fujisawa ,  Hiroshi Mukawa

IPC分类号： G11B20/12 ,  G11B7/013 ,  G11B20/00 ,  G11B20/10 ,  G11B27/00 ,  G11B27/10 ,  G11B27/30 ,  G11B27/34 ,  G11B5/09

CPC分类号： G11B20/00007 ,  G11B20/10527 ,  G11B27/005 ,  G11B27/3027 ,  G11B27/34 ,  G11B7/013 ,  G11B2020/1277 ,  G11B2220/2525 ,  G11B2220/2545 ,  G11B2220/255 ,  G11B27/3063

摘要： There is provided a disc recording apparatus for recording digital data by an optical unit in such a manner that time compressed digital data are arranged into a plurality of clusters at an interval of a predetermined number of sectors, a cluster-linking sector having a length longer than an interleaving length is provided at each linking part of each cluster, and the digital data are subsequently interleaved and recorded on a disc-shaped recording medium so that interleaving at the time of data recording on the cluster-by-cluster basis is within the range of the cluster-linking sector. There is also provided a disc reproducing apparatus for reproducing digital data by an optical unit in which playback data are obtained by reproducing record data recorded on a disc-shaped recording medium in such a manner that a cluster-linking sector longer than an interleaving length is provided in a linking section of each cluster composed of a predetermined number of sectors, the resulting data is interleaved and recorded on the disc-shaped recording medium, and the playback data are deinterleaved and freed or the cluster-linking sectors so as to be stored transiently in a storage unit. Playback data are written in the storage unit when the data volume of playback data stored in the storage unit becomes smaller than a predetermined volume to maintain a readout space in the storage unit which is in excess of the predetermined data volume. In this manner, data may be read out continuously from the storage unit at a predetermined rate without interrupting the reproducing operation at the cluster-linking sector of the data recorded on the medium.

摘要翻译： 提供了一种用于以光学单元记录数字数据的盘记录装置，使得时间压缩的数字数据以预定数量的扇区的间隔被布置成多个簇，具有长度更长的簇连接扇区 比在每个簇的每个链接部分处提供交织长度，并且数字数据随后被交织并记录在盘形记录介质上，使得在逐个簇的基础上的数据记录时的交织在 集群链接部门的范围。 还提供了一种用于通过光学单元再现数字数据的盘再现装置，其中通过以记录在盘形记录介质上的记录数据来再现数据，使得长于交织长度的簇链接扇区 提供在由预定数量的扇区组成的每个簇的链接部分中，所得到的数据被交织并记录在盘形记录介质上，并且重放数据被去交织和释放，或者聚类链接扇区被存储 暂时在存储单元中。 当存储在存储单元中的重放数据的数据量变得小于预定的音量时，将重放数据写入存储单元，以保持存储单元中超出预定数据量的读出空间。 以这种方式，可以以预定的速率从存储单元以连续的数据读取数据，而不会中断记录在介质上的数据的聚类链接扇区的再现操作。

公开(公告)号：US5325371A

公开(公告)日：1994-06-28

申请号：US747001

申请日：1991-08-19

申请人： Yasuaki Maeda ,  Kazuhiko Fujiie

发明人： Yasuaki Maeda ,  Kazuhiko Fujiie

IPC分类号： G11B20/12 ,  G11B20/18 ,  H03M13/27 ,  G06F11/10

CPC分类号： G11B20/1809

摘要： An error correction encoding apparatus for processing input data with an encoding for error correction, including first delay circuitry for applying differing delay to data words to convert input data in a first array state into data words in a second array state, a first error correction encoder for generating first check words from data words in the second array state, second delay circuitry for applying differing delay to the data words in the second array state and the first check words to generate data words and check words in a third array state, and a second error correction encoder for generating second check words from the data words and the check words in the third array state, with the delays applied by the first and second delay circuitry set so that the array states of the data words in the first and the third array states are the same. In other embodiments, the invention is an error correction decoding apparatus including a first error correction decoder for processing input data words and check words in a third array state by error correction by a second error correction code using a second check word series, first delay circuitry for applying differing delay to the corrected data words and check words from the first error correction decoder to generate data words in a second array state and first check words, a second error correcting decoder for error-correcting the data words in the second array state by a first error correction code using the first check words, and second delay circuitry for applying differing delay to the corrected data words from the second error correcting decoder to generate data words in a first array state.

摘要翻译： 一种用于处理具有用于纠错编码的输入数据的纠错编码装置，包括用于向数据字施加不同延迟的第一延迟电路，以将处于第一阵列状态的输入数据转换为第二阵列状态的数据字;第一纠错编码器 用于从第二阵列状态的数据字产生第一检查字，用于对第二阵列状态的数据字施加不同的延迟的第二延迟电路和第一校验字以产生第三阵列状态的数据字和校验字， 第二纠错编码器，用于从数据字和第三阵列状态的校验字产生第二校验字，其中由第一和第二延迟电路设置的延迟使得第一和第三数据字中的数据字的阵列状态 阵列状态是一样的。 在其他实施例中，本发明是一种纠错解码装置，包括：第一纠错解码器，用于通过使用第二校验字序列的第二纠错码通过误差校正来处理输入数据字和检查第三阵列状态的字;第一延迟电路 用于对所述经校正的数据字施加不同的延迟并且从所述第一纠错解码器检查字以产生处于第二阵列状态和第一校验字的数据字;第二纠错解码器，用于对所述第二阵列状态中的数据字进行纠错， 使用第一校验字的第一纠错码和第二延迟电路，用于对来自第二纠错解码器的校正数据字施加不同的延迟，以产生处于第一阵列状态的数据字。

公开(公告)号：US20100254249A1

公开(公告)日：2010-10-07

申请号：US12734654

申请日：2009-10-01

申请人： Kazuhiko Fujiie

发明人： Kazuhiko Fujiie

IPC分类号： G11B7/00 ,  H01S3/10 ,  H01S5/042

CPC分类号： H01S5/06216 ,  B82Y10/00 ,  G11B7/126 ,  H01S5/0014 ,  H01S5/0428

摘要： The present invention realizes the emission of a high-output short-pulse beam and a reduction in power consumption. A laser control unit (2) of a short-pulse light-source device (1) raises a gate pulse (PG) of a gate signal (SG) supplied to a power supply circuit (5) in such a manner that the gate pulse (PG) rises only for the duration of an extremely short pulse width (T) to include the rise time of a generated pulse (PL) of a pulse signal (SL) supplied to a driving circuit (6). In this way, necessary power can be supplied at the rise timing of the generated pulse (PL), and the power consumption (Pa) can be greatly reduced from the standard power consumption (Pb).

摘要翻译： 本发明实现了高输出短脉冲光束的发射和功耗的降低。 短脉冲光源装置（1）的激光控制单元（2）以提供给电源电路（5）的栅极信号（SG）的栅极脉冲（PG）升高，栅极脉冲 （PG）仅在极短脉冲宽度（T）的持续时间上升，以包括提供给驱动电路（6）的脉冲信号（SL）的产生脉冲（PL）的上升时间。 以这种方式，可以在产生的脉冲（PL）的上升时刻提供必要的功率，并且可以从标准功耗（Pb）大大降低功耗（Pa）。